Please help me i really need help please
...
Answers: 3
Mathematics, 21.06.2019 16:00
Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).
Answers: 3
Mathematics, 21.06.2019 19:40
Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?
Answers: 3
Mathematics, 21.06.2019 20:00
The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?
Answers: 2
History, 14.12.2020 01:00
Mathematics, 14.12.2020 01:00
Computers and Technology, 14.12.2020 01:00
Mathematics, 14.12.2020 01:00
Mathematics, 14.12.2020 01:00
Mathematics, 14.12.2020 01:00
Mathematics, 14.12.2020 01:00
Mathematics, 14.12.2020 01:00
Chemistry, 14.12.2020 01:00
English, 14.12.2020 01:00